function validate_required(field,alerttxt)
{
with (field)
{
if (value==null||value=="")
  {alert(alerttxt);return false;}
else {return true}
}
}function validate_form(thisform)
{
with (thisform)
{
if (validate_required(fullname,"Name must be filled out!")==false)
  {fullname.focus();return false;}

if (validate_required(Telephone,"Telephone number must be filled out!")==false)
  {Telephone.focus();return false;}

if (validate_required(Email,"Email must be filled out!")==false)
  {Email.focus();return false;}
 
}
}